AMPX Filings — Amprius Technologies, Inc. - FilingSpy
AMPX
Amprius Technologies, Inc.
A maker of high-energy lithium-ion batteries with silicon anodes instead of the usual graphite, Amprius builds power packs for drones, high-altitude aircraft, and electric aviation — its SiCore and SiMaxx platforms have been tested by hundreds of customers including Airbus and the U.S. Army. It grew out of Stanford research, founded in 2008 by professor Yi Cui, and its name blends "amp" (electric current) with "prius," the Latin word for "first" or "go before."
Select a row to see that insider’s individual transactions. † Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -10.67M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.